Dell used to be really good quality....

[TheLaw]

Re: Dell used to be really good quality....

Forget what I said about HNs. They cost too much. How about KYs? They are like $0.50...pretty tempting. Thanks.

[TheLaw]

Re: Dell used to be really good quality....

Say I used HNs for the caps that need to be low-ESR, would that work? They also have good specs. High ripple current/low ESR.

[goodpsusearch]

Re: Dell used to be really good quality....

Using used caps is a risk I take.

[SuperDuty]

Re: Dell used to be really good quality....

Good to know, thanks ! I have repaired stuff with used capacitors with no problem though. I'll make a search.

[yyonline]

Re: Dell used to be really good quality....

I took it apart and I was pleasantly surprised to see Sanyo 6.3V 1200uF and Nichicon 10V 1000uF capacitors on the motherboard. Needless to say I desoldered them all for further use.

Make sure you search the forums for some of the pitfalls of reusing used capacitors. It's not always a good idea as capacitors reform to the voltage of the circuit they are on. For 12 year old used capacitors, I wouldn't even consider it...Even reliable caps have a finite life.

[SuperDuty]

Re: Dell used to be really good quality....

But it's a pleasant surprise when you open one of these up and get some really lovely stuff. HP on the other hand....We won't get into that.

Just wanted to bump on this. I've picked up a semi-dead HP Vectra from 1999 at the dump (I find amazing stuff there), the computer did start but the graphics card did not work. I took it apart and I was pleasantly surprised to see Sanyo 6.3V 1200uF and Nichicon 10V 1000uF capacitors on the motherboard. Needless to say I desoldered them all for further use.

Same for Acer, which doesn't have a great reputation in terms of durability of their hardware. I've found the remains of an Acer eMachines from 2008, and to my surprise, the processor (IIRC) capacitors on the motherboard are all Sanyo ! I did the same and removed the caps

[PCBONEZ]

Re: Dell used to be really good quality....

the number on the post counter (at the right.. where it says #87, #88, #89, ...) is actually a link to view a single post.
like so
https://www.badcaps.net/forum/showpo...7&postcount=88

I know that but bookmarks are only useful when you are on the same PC every time.

[PCBONEZ]

Re: Dell used to be really good quality....

What goodpsusearch said is usually the case but it's best just to look up the specs on the old ones because PSU's do have ringers now and then just like mobos.
[ringer = non-typical & unexpected value]
.
Also mfr#1 might use one great spec cap where mfr#2 uses a pair of lesser caps in parallel to achieve the same thing.

It's just better to look them up.
.

[TheLaw]

Re: Dell used to be really good quality....

Thanks.

[goodpsusearch]

Re: Dell used to be really good quality....

FM, FR -- [.030][.018-.019] and below...

[TheLaw]

Re: Dell used to be really good quality....

Great list, but which are suitable for power supply use?

[Scenic]

Re: Dell used to be really good quality....

UG!
I really need to put up a web page on this so I can link to it instead of writing it out every time..

the number on the post counter (at the right.. where it says #87, #88, #89, ...) is actually a link to view a single post.
like so
https://www.badcaps.net/forum/showpo...7&postcount=88

[mockingbird]

Re: Dell used to be really good quality....

Very nice! Bookmarked.

[PCBONEZ]

Re: Dell used to be really good quality....

UG!
I really need to put up a web page on this so I can link to it instead of writing it out every time..

The tiers go:

[xxx][xxx] = ESR(or ESR range) at [8x20mm][10x20mm]

HZ, GA -- [.009][.007]
------------------------------------------------------
KZJ, GC, HN, MCZ -- [.012][.010-.011]
------------------------------------------------------
FJ, FL, WGL2, NRSJ -- [.016][.013]
MBZ, HM, WG, GD, KZG, NRSK -- [.018-.019][.013]
KZG, ZLG -- [.020-.021][.013-.014]
------------------------------------------------------
GE -- [.025][.016]
------------------------------------------------------
FM, FR -- [.030][.018-.019]
HV, ZLH, KZM, KZH, NRSH -- [.029-.033][.019-.020]
------------------------------------------------------
ZL, KZE, WX, HD, GK, NRSG -- [.041][.023]
------------------------------------------------------
ZT (125C - Low ESR & High Temp) -- [.054][.030]
PA, FK -- [.044][.035]
------------------------------------------------------
HE, KY, YXG, YXH -- [.069][.046]
------------------------------------------------------
JXA, FC, PW, NRSX, NRSZ, and others --[.065-.080][.044-.054]
------------------------------------------------------
LXZ, PM, and many others... - [.080-up]-and-[.050-up]
------------------------------------------------------
There are a few not included because they are newer than when I made this or I simply had a brain fart.
---
The ones that are in bold are simply the ones seen most often and/or that usually come up in conversations.
.

[TheLaw]

Re: Dell used to be really good quality....

Yes
Caps like FC, PW, LXZ are 'entry level' low ESR caps.
They ARE low ESR but not drastically low ESR.
The benefit to using them in place of GP is they are usually higher quality caps.
-
Also, since you aren't buying GP + [like "FC grade"] caps you can take advantage of the qty discounts. [Buying one kind for both applications.]
-
An example is 220uF 16v. They are used like EVERYWHERE and it's a mix of GP and 'entry level' low ESR.
Rather than stocking two kinds of 220uF 16v caps I buy 'entry level' low ESR 100pc [or more] at a time which cuts the cost per-each significantly.
-
.

Oh alright. I mean the price differential between GP and low(ish) ESR caps is pretty negligible. So if I do FCs in place of GP, that would be good? Theoretically, would FMs work for the low-esr caps, or is there something more power supply oriented. Mockingbird never got back to me on that. >.<

I've been looking around...and is it just me, or do FMs absolutely destroy other caps spec-wise? I'm looking at Nichicon PMs/ UCC KY among others. Seriously FM is like off the charts. Comparing exact case size and values. ESR is almost half as low, and ripple current is doubled in some cases. The only competitor I see is UCC KZE which looks pretty darn decent as well.

[TBoneit]

Re: Dell used to be really good quality....

reminds me of my P4C800-E Deluxe.
new caps, new BIOS, checked for shorted or open mosfets (every single one)... nothing.. dead as a rock..
POST code card always shows FFFF.. ie dead..

edit: talking about FFFF...

Strangely enough I have the exact same motherboard here. Other than that a nice computer. It posts and then gives a GPF when trying to install any windows. Sometimes no post but a message about a Bios failed checksum.

I'd love to fix it but i don't see anything looking bad.
Anybody?

[PCBONEZ]

Re: Dell used to be really good quality....

Impedance wise, that's okay? To use pretty low ESR caps in place of even the General Purpose?

Yes
Caps like FC, PW, LXZ are 'entry level' low ESR caps.
They ARE low ESR but not drastically low ESR.
The benefit to using them in place of GP is they are usually higher quality caps.
-
Also, since you aren't buying GP + [like "FC grade"] caps you can take advantage of the qty discounts. [Buying one kind for both applications.]
-
An example is 220uF 16v. They are used like EVERYWHERE and it's a mix of GP and 'entry level' low ESR.
Rather than stocking two kinds of 220uF 16v caps I buy 'entry level' low ESR 100pc [or more] at a time which cuts the cost per-each significantly.
-
.

[TheLaw]

Re: Dell used to be really good quality....

I'll take that as a yes.

[TheLaw]

Re: Dell used to be really good quality....

Impedance wise, that's okay? To use pretty low ESR caps in place of even the General Purpose?

[PCBONEZ]

Re: Dell used to be really good quality....

FC are better than KME and just fine to use.
You can basically use FC, PW, LXZ, or even KY or HE in place of anything in that list except for the first 3.